Roof and wall structure



Nov. 22, 1932. K. MENNICKEN 1,888,233

ROOF AND WALL STRUCTURE I Filed Dec. 11, 1928 2 Sheets-Sheet 1 @972 e7z7ziclfen Nov. 22, 1932. MENMCKEN 1,888,233

ROOF AND WALL STRUCTURE Filed Dec. 11, 1928 2 Sheets-Sheet 2 Patented Nov. 22, 1932 UNITED STATES nm. mmcxmr, orrissnm GERMANY 1' ROOF AND wnrnsrnulc'rnimi Application filed December 11, 1928, Serial No. 355,267 and ermany jovember 26, 1927.

My invention relates to improvements in roof and wall structures, and more particularly in structures composed of crossing lamellas, each lamella being ointed at points 5 intermediate its ends to the ends of crossing lamellas located at opposite sides thereof. The object of the improvements is to provide a structure in which the ends of each lamella are pressed on the crossing lamellas by the forces acting in the structure. With this object in view my invention consists in displacing the said crossing lamellas with relation to each other, so that they are out of alignment with each other and are connected to the third lamella at points remote from the middle and near the ends thereof. Therefore the ends of the crossing lamellas jointed to the third lamella tend to turn the said third lamella thus pressing the same with its ends on other lamellas crossing the same. Since each lamella is thus acted upon by two other lamellas a rigid structure is obtained.

For the purpose of explaining the invention an example embodying the same has been shown in the accompanying drawings in which the same reference characters have been used in. all the views to indicate corresponding parts. In said drawings,

Fig. 1 is an elevation showing the ims proved structure as used in a roof,

Fig. 2 is a plan view of Fig. 1,

Fig. 3 is a development on an enlarged scale showing a part of the structure,

Fig. 4 is a perspective view showing a part of the structure, and

Fig. 5 is a detail view showing the joint of two crossing lamellas.

In the example shown in the drawings the 0 roof structure consists of two parts supported on the side walls a of the building and composed of two series of lamellas m, m m and n, n n said lamellas all being of the same length and crossing each other at acute angles 5 y. The lamella m as shown in Fig. 3, for instance, extends from the knot c to the knot 12 and has lamellas n and n jointed thereto at f and g. The knots f and g are located near the ends of the lamellam and 0 away from the middle thereof, so that the lamellas '17. and n are out'of alignment. In the same way the lamella n? has lamellas m and m jointedthereto at the-points 0 and (Z located near its ends. The sections e -f, fg, and gd of the lamella'm and the sections'g?d -0, and'cf of the lamella n are'alike'in length. The forces acting in the lamellas n andnl act on the lamellam fromf opposite sides and they tend to turn the lamella m in anti-clockwise direction; The forcea'cting in the lamella n locate'd near the knot d acts on the lamella m from'theside which is opposite the acutev angle included between the lamellas m and n at the knot, and the force acting in the lamella n acts on the lamella m from the side which is opposite to the acute angle included between the lamellas m and n at the knot 0. Therefore the ends 0 and d of the lamella m are pressed against the lamellas n and n Figs. 3 and 4 show a part of the structure on an enlarged scale. 7 In Fig. 5 I have illustrated the manner of connecting the lamellas m and n at their knots, screws 8 crossing the acute angles 3/ and clamping the lamellas together.

In some cases I provide lamellas i shown in 1 the figures in dotted lines, for reducing the areas included between the lamellas m and n. The lamellas i do not form a part of the structure, but they are. provided for supporting the roof covering.

I claim: v 1. A structure substantially as herein described for roofs, walls and the like consisting of two series of vertically disposed intersecting lamellas the member of each series being parallel with each other, the ends of the members of the first series being adjoined to members of the other at a point approximate- 1y one-third from their ends, the opposite sides of the members of the first series being adj oined by the ends of members of these(:- 0nd series at points one-third the length of the members of the-first series, and bolted fastening devices joining the lamellas at their j ointures whereby the angle formed between the adjoining end and the one-third length of the members is an acute angle. '7

2. A structure for roofs, walls, and the like, consisting of two-series of vertically disposed intersecting lamellas, the lamellas of each series being parallel with each other, the ends of the lamellas of the first series being adjoined to the lamellas of the second series at a point approximately one-third from their ends, the opposite sides of the lamellas of the first series being adjoined by the ends of the lamellas of the second series at points one-third the length of the lamellas of the first series and forming parallel lines of thrust on the opposite sides-of thelamellas of the first series whereby an angular mo ment of force is exerted about a common 7 center of rotation on said first lamellas, the 7 lines of thrust of the lamellas of the second series against the faces of the lamellas of the first series forming oppositely disposed and transverse obtuse angles with respect to the side of the lamellas of the second series facing the center of angular moment of the lamellas of the first series, and bolt fastening devices joining the lamellas'at their ointures whereby the angle formed between the adjoining end and the one-third length of the member is an acute angle.

In testimony whereof I hereunto affix my signature.

KARL MENNICKEN. 

